Stir together ground nuts, cinnamon, and sugar. Mix in melted butter.

Press the mixture into the bottom and up the sides of a 9 inch, deep-dish style, pie pan. Chill the unbaked crust in the refrigerator for about 30 to 45 minutes.

Place pie crust on a cookie sheet, and position on the middle rack of a preheated 350 degree F (175 degree C) oven. Bake for 12 to 15 minutes, or until lightly browned. WATCH it carefully, as nut crusts burn easily; they DON'T have to turn black to taste burnt! Cool completely before filling.